Multiplier mechanism for looms.



BEST AVAiLABLE 00% No. 700,999. v Patented May 27, 1902. H. WYMAN &. A. A. GORDON, 1R. MULTIPLIER MECHANISM FOR LOOKS.

(Application filed June 10, 1901.!

2 Sheets-$heet I.

(No Model.)

BEST AVAiLABLE COP;

No. 700,999.' Patented May 27, I902.

' H; WYMAN & A. A. GORDON, JR.

MULTIPLIER MEGHAMSM FOR LOOKS.

(80 man.)

'2 Sheets-Shem 2.

To ctll'whom it cor warm.

BEST AVAiLABLE com V UNITED STAT S PATENT OFFICE.

HORACE WYMAN' AND ALBERT A. eoRnox, JR, OF WORCESTER, MASSA- OH-USETTS, nssrenons To cRoM oN & KNOWLES LOOM WORKS, or oRcEsTEE, MASSACHUSETTS, A conronn'rron ou AssAoI usETTs MbL nPr ER MECHANISM FOR Looms.

SIECIEICATION forming partof Illetters Patent No. 7 00,999, dated May-27, 1902.

' I I Application filed June 10,1901. Serial No. 63,844. (No model.)

Be it known that we, Bonner: WYMAN and ALBERT A. GORDON, Jr., citizens of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have jointly invented certain new and useful Improvements in Multiplier Mechanisms for Looms, of which the following is 2.

specification.

x, Q'ur invention relates to looms for'weaving textile fabrics, and particularly to that class 'of looms in which, in connection with the.

drop-box pattern-chain mechanism, auxiliary or multiplier pattern-chain mechanisms are used, I

The object of our invention is to reduce the length of the drop-box pattern-chain and pro.-

. vide means for automatically reversing said chain and means'forrepeatinga certain porti'on-of -said chain and also means for multi plying a given pick.

Our invention consists in certain novel features of construction of our pattern-chain} mechanisms, as will be hereinafter fully described. i a

We have only shown 'in'the drawings sufiicient parts of a loom with our improvements applied thereto to enable those skilled in the art to which our invention belongs to understand the construction and operation thereof:

Referring to the drawings,Figure l is a plan view of pattern-chain mechanisms embodying our improvements. Fig. 2 is a side view of the parts shown in Fig. 1, taken at a point in-.

dicated by line 2 2,- Fig. 1, looking in the di- .rection of arrow a, same figure; and Fig. 3 is a section through the parts shown in Fig. 1, taken at a point indicated by line 3 8, same figure.

A framework (not shown) is attached to the loom side (not shown) and has bearings for the several shafts and studs. (Shown in the drawings.)

-To the upright rod 1 (shown in Fig. 2) is communicated from a driven part of the loom (not shown) a regular up-and-down motion.

ilhe upper end of said rod 1 is adjustably connected by a bolt 2, having a nut 2' thereon, witha slotted portion 3' of the plate 3, which cured studs 5 and 6.

has a hub 3", mounted to rock on a stud 4.. In slots 3" in the plate 3 are adjustably se- A stud 7 is also secured in the plate 3. On the stud 5. is pivotally mounted the pull-pawl 8, and on the stud (3 the push-pawl 9, and on the stud 7 the pullpawls 10 and 11. Y

A shaft 12 rotates in bearings on the frame, (not shown,) and fast on said shaft 12 is the drop-box pattern-chain cylinder 13, carrying a chain 14, made up of bars, carrying rolls and tubes and connected by links in the ordinary way. One drop-box indicator-lever 13' is shown in Fig. -1 extending over the chain 14- in the ordinary way. Two ratchet-wheels 15 and 16 are fast on the-shaft 12, with their teeth extending in opposite directions (as shown in Fig. 3) and adapted to be engaged and operated at the proper time by the pawls 8 and 9 to turn the pattern-chain cylinder, 13 and the pattern-chain 14 forward or back, as desired.

' A shaft I7is fixed in hearings on the frame (not shown) and has loosely mounted thereon the auxiliary-pattern-chain cylinder 18,carrying the pattern-chain 19, made up of bars connected by. links, some of said links 19 being made higher, as shown in Fig. 2, to act as pattern-surfaces. A ratchet-wheel18"is connected to or made integral with the auxiliarypattern-chain cylinder 18 and is operated by a projection 11 on the pull pawl 11. (See Fig. 2.)

A shaft 20 rotates in bearings on the frame (not shown) and has loosely mounted thereon a multiplier-pattern-chain cylinder 21, (see Fig. 1,) cai'rying the multiplier pattern-chain 22 of similar construction to the chain 19, above referredto. A ratchet-wheel 23 is fast on the shaft 20 and is adapted to be engaged by a pull-pawl, hereinafter described. A ratchet-wheel 23 is made integral-with the pattern-chain cylinder 21 and is operated by the pull-pawl'lO to turn the cylinder 21. On the opposite end of the shaft 99 is fast the stopping or arresting device 2i. (Shown in Figs. 1 and 3 at the right.) Said device 24 consists in this instance of two adjacent disks or cams, which have recesses in their peripheries EESTAVAiLdBLE CUP.

i at regular intervals, the recesses being arthe recessed portions 24. in said device, as

. hub-like extension through which extends shown in Fig. 3. The opposite ends 26' and 27' of the controlling-levers 26 and 27 are curved to extend over the ratchet-wheels15 and 16 and to support the pawls 8 and 9 by meansot pins 8 and 9 extending out from said pawls, 8 shown in Fig. 3.'

The forke end 29' of a connector-lever 29 is supported on the shaft 25 and secured thereto by the 'pin 28'. (See Fig. 1.) The crossbar 29" of the lever 29 extends over and rests on the levers 26 and'27, as shown in Figs. 1 and 3, andthe extended end of the lever 29' has'attached thereto a connector 30, which is connectedat its lower end with mechanism for calling the multiplier. into action, (not shown,) but which may be of any ordinary construction and operation.

On the stud'17 is loosely mounted a changelever 32, with one end 32' extending over the pattern-chain 14 and held in contact therewith by a spring 33 and the other end 32" bent at its extreme end, as shown by dottedlines in Fig. 1, and extending under and supporting the pull-pawl 10, as shown in Fig. 2.

a On the pull-pawl 10, near its free end, is a the pin 35. On the pin 35 is mounted the hub 36 of the double or forked pawl, having the pull-pawl end 36" extending over the ratchet 23 (see Fig. 2) and the plain end 36' extending over and resting on the chain 22. (See dotted lines, Fig. 2.) An extension 36"" on the end 36" extends over and rests on the end of the pull-pawl 10, (see Fig. 1,) so that when the pull-pawl 10 is raised the forked pawl will be raised.

On the shaft 17 is loosely mounted the lever 40, having one end 40' extending over the pattern-chain 14 and held in engagement therewith by the spring 41 and having its opposite end 40" curved upwardly and bent to extend under and support the pull-pawl 11, as shown in Fig. 2.

On the shaft 25 is fast a multiplier arm 43, which engages with the pattern chain 19 when the connector-lever 29 is released by the connector 30 to allow the shaft 25 to rotate.

We will now describe the operation of the pattern mechanisms shown in the drawings. When the multiplier pattern-chain 22 is called into action, the connector 30 being released to allow the connector-lever 20 to be raised and with it the bar 29", extendingover controlling-lovers .26 and 27, thus releasing said lovers, the lever 26 will in this instance 4 move on its pivotal support, and the. extension 26" thereonwill extend into one of the.

recessed portions 24 in the arresting device 24:. The lever 27 willbe prevented from moving by reason of the extension 27 thereon engaging the non-recessed portion on the arresting device 24. The rocking of the lever:

26 on its pivotal support will lower the curved end 26' of said lever and allow the pull-pawl 8 to engage the ratchet-wheel 15. Anwupward stroke of the rod 1 will rock the plate 3. I.

and communicate movement to the pawl 8 and cause it to rotate the ratchet wheel 15 the distance of one tooth. At the same time the v drop-box pattern-chain cylinder 13 will be rotated and the chain '14 'moved one bar to carry the roll 14', Fig. 2, from under the end 32of the change-lever 32. This allowsthe end.32'-,

to drop, drawn down by the spring 33, and raises the'opposite end 32'( of said lever 32, p

which engages the p'ul hpawl l0 and raises f said pawl out of engagement with the ratchet wheel 23'. The raising of the pawl 10 will simultaneously, through the extension 36"", extending over the pawl 10, raise the pawl 36 out of engagement with the ratchet-wheel 23 and the end 36" of the pawl out of engagement with the pattern-chain surface 22, so

9 5 that in the continued movement ofthe rod 1 and the rocking plate 3 the pawl 10 and pawl 36"v will beheld out of engagement with the" ratchet wheels 23 and 23', and the pull-pawl 8 'will continue to revolve the ratchet-wheel 15 '1 O0 and the pattern-chain 14 a bar at a time until,"

if a complete revolution of the chain is desired,

32 to raise said lever, and at the same time lower the pawl 10 and the double or forked pawl to allow the pawl 36" to engage and move the roll 14' is again brought under the lever the ratchet-wheel 23 and the pawl 10 to I move the ratchet-wheel 23 by the continued motion of the 'rod 1 and rocking plate 3.

the arresting device' 24 to bring a non-re- The rotation of the ratchet-wheel 23 moves c'essed portion over the extension 26" on the lever 26 and at the same time a recessed portion 24=f o ver the extension 27" on thejlever.

27 thus movin the lever 26 on its ivotal support and through its end 26' raising the.

raise the pawl 10 and forked pawl out of en as above described. The reverse motion of the pattern-chain 1% will continue until the mills again comes under the end 32'of the lever 32, when the operation above described is repeated and the chain 14 will again be .moved in a forward directionthat is .to say,

an indicator, as roll 1i, carried outhe pat- 14' out from under the le'ver 32 and allowing Y I said lever to be moved by the spring 33'to,

gagem ent with their ratchet-wheels 23 and 23,

' tern-chain, will when brought under levcr32 cause the pattern-chain itself to reverse its 7 movement, whichever way the chain may be moving at the 'time'the roll is moved .under thelever. Y

Instead of making a complete revolution of the pattern-chain before reversing its movenient, as above described, another roll let'- may be placed on the chain at such a dis tance from the first-mentioned roll 14: as will contain a suitable number of bars for a pattern to be woven first forward and then in a reversed manner as long as desired. The rerepeata given section of the pattern-chain 14' instead of reversing it, as above described.

.to on a e the attern-chaln 19.

It will be understood that when the forked pawl engages the ratchetwh'eel 23 to turn the arresting device 24, as above described, the pawl 10 will at the same time engage the ratchet-wheel 23' and turn the multiplier-pat-- tern-chain cylinder 21;

The continued revolution of the'multiplier-pattern-chain cylinder 21 will bring the high link'22' on the chain 22 under the end 36' of the forked pawl to raisesaid end 36' and at the same time raise the pawl end 36" out of engagement with the ratchet-wheel 23,leavin g said ratchetwheel and the shaft and the arresting device 24 at rest. 14 will continue in the same direction as before-that is, if the pawl '8 is down and operatin g the pattern-chain cylinder 13 it will continue down, a..d if the pawl 9 is down and operating the pattern-chain cylinder 13 in the opposite direction it will continue down, for the rotation of'the arresting device 24 to effeet the exchange of pawls 8 and 9, as above described, will not take place, and therefore a given section .of the pattern-chain 14 will be repeated instead of the chain being reversed.

We will now describe the operation of the mechanism in case it is desired to multiply a given pick.

In the revolution of the pattern-chain 14:, in case it has additionalrolls, as 42, to be brought under the lever 40, when a roll 42 (see Fig. 2) is brought under the end 40 of the lever 40 it will raise said lever -10 and lower the end -10", extending under the pawl 11, to allow the e.\ tension 11 on the pawl 11 to engage with the ratchet-wheel 18, connected with the auxiliary-pattern-chain cylinder 18, and turn said. ratchet-wheel and cylinder and move the chain 1.) thereon until a high link 10. on said chain 19 is brought under the multiplying-arm 43, which arm through the releasing of the connector-3i.) and the movement of the lever 29 and the rotation of the shaft is allowed be passing The main box-pattern chain BEST AVAELABLE 80?;-

of a link 19 under the arm e3 raises said arm and rotates the shaft 25 in the direction of arrow 6, Fig.2, to move ill? lever 29 and cause the cross-bar 29 thereof to bear on the controlling-levers 26 and 27 to move said levers on their pivotal supports and raise the ends 26" and 27' of said levers to cause them to engage the pins 8 and 9"on the pawls 8 and 9 and raise said pawls out of engagement with their respective ratchet-'wheels 15 and 16. The multiplication will continue as long as there is an unbroken succession of the high links 19' on the chain 19, as shown in Fig. 2; but as soon as a low linkvcomes under the arm 43 the shaft 25 will be rotated in an opposite direction, when th'econnector is released and the lovers 26 and 27, through the movement of the cross-bar'29", will be released and allowed to move to allow one of the pawls 8 or 9 to engage with its ratchet-wheel, according to the position of the arresting device 24.

It will be seen that with the ahovementioned improvement in pattern-chain mech- 'anisms a pattern can be woven back and forth Having thus described our invention, what we claim as new, and desire to secure by Lettors Patent, is-

1. In a m, a main pattern-surface with indicators, a change -lever adapted to be moved by said indicators, and pawls adapted t5 move the pattern-surface in either direction, and means between said change-lever and saidpawls to reverse the direction of movement of said main pattern-surface, of a multiplier pattern-surface carrying indicators to prevent the indication of said changelever,'and cause said main pattern-surface to continue its movement in the same direction, substantially as shown and described.

2. In a loom, amain pattern-surface, a pair of reversely actin g ratchet-whcels,on the shaft of said main pattern-surface, and codperating pawls to move said ratchet-wheels, of a main change-lever moved by indications on said main pattern-surface, and intermediate connections between said lever andsaid pawls,

to put either pawl into operative position with sEs'TAvAiLAeLE 00px its respective ratchet-wheel, of a multiplier pattern-surface, and intermediate connections' between said two pattern-surfaces, by

means of which the main pattern-surface is causedto stop at predetermined intervals,

and a multiplier controlling-lever, and intermediate connections between said multiplier controlling-lever and said pawls, whereby said lever will put into an inoperative position either pawl, which maybe at the time in operative position, substantially as shown and described.

'4. In aloom, the combination of a main pattern-surface,means for moving said main pattern-surface either forward or backward, an auxiliary pattern-surface, means under control of the main pattern-surface for determining the operation of the auxiliarypattern-surface, controlling devices for controlling the movement of the main pattern-surface, and

' means intermediate the auxiliary mechanism and said devices for determining the operative or inoperative action of the main pattern-surface.

5. In a-loom, the combination of a main pattern-surface,means for moving, said main pattern-surface either forward or backward, controlling-levers for controlling the operation 7 4 oi the main-pattern-surface-actuating means, an auxiliary pattern-surface, means under control of the main pattern-surface for operating said auxiliary pattern-surface, a multiplying-arm operable from said auxiliary pattern-surface, a connector-lever in operative relation to said multiplying-arm, and means connected to said lever to move both controlling-levers to renderinoperat-ive the main-patv tern-surface-actuating means.

6. In a loom, the combination of a main pattern-surface, means for moving it either backward or forward step by step to the extent desired, controlling-levers for determining the movements of the main pattern-surface, a multiplier pattern-surface controlled in its operation from the main pattermsnrface to determine the position of each of the controlling-levers, an auxiliary pattern snrface also controlled in its operationfrorn the main pattern-surface, and means openable therefrom to act upon both controllingdeveris to render ing means.

inoperative the main-pattern-surface-actuat- HORACE WYMAN.

. ALBERT A. GORDON, JR.

Witnesses:

J. O. DEWEY, M. HAAS. 

